It’s actually quite simple. I always thought it was difficult and you’d have to learn from a code sheet, but I found an app which teaches you and you actually just recognise the sounds like you’d recognise any other sound. You generally don’t even need to decode it- you just get used to what a letter sounds like. I’ve been learning since Saturday and can already key my name out.
Had to learn it as a kid to get my ham license, now apparently its not part of the exam process for the license. I’d fit right in today because ill be damned if I can remember any of it.